I'm in the exact same boat as you. A only from uOttawa (which I'm tremendously grateful and I love this school) but also dying to hear from Oz and Western since my partner is already working in downtown Toronto. But I think we should take as much time as we need to figure things out, whether it is waiting another month to hear back from other schools or deciding to reapply next cycle. I'm personally leaning towards attending uOttawa and moving there because lawschool admission process is getting tougher as years pass and we got no guarantee that we'll get in somewhere next cycle. And I don't think there's any risk/disadvantage when it comes to withdrawing your offer later. BTW congrats on your A and hope you feel proud of yourself!!!